"""

Classes for the ticks and x- and y-axis.

"""

import datetime

import functools

import logging

from numbers import Real

import warnings

import numpy as np

import matplotlib as mpl

from matplotlib import _api, cbook

import matplotlib.artist as martist

import matplotlib.colors as mcolors

import matplotlib.lines as mlines

import matplotlib.scale as mscale

import matplotlib.text as mtext

import matplotlib.ticker as mticker

import matplotlib.transforms as mtransforms

import matplotlib.units as munits

from matplotlib.ticker import NullLocator

_log = logging.getLogger(__name__)

GRIDLINE_INTERPOLATION_STEPS = 180

# This list is being used for compatibility with Axes.grid, which

# allows all Line2D kwargs.

_line_inspector = martist.ArtistInspector(mlines.Line2D)

_line_param_names = _line_inspector.get_setters()

_line_param_aliases = [next(iter(d)) for d in _line_inspector.aliasd.values()]

_gridline_param_names = ['grid_' + name

for name in _line_param_names + _line_param_aliases]

class Tick(martist.Artist):

"""

Abstract base class for the axis ticks, grid lines and labels.

Ticks mark a position on an Axis. They contain two lines as markers and

two labels; one each for the bottom and top positions (in case of an

`.XAxis`) or for the left and right positions (in case of a `.YAxis`).

Attributes

----------

tick1line : `~matplotlib.lines.Line2D`

The left/bottom tick marker.

tick2line : `~matplotlib.lines.Line2D`

The right/top tick marker.

gridline : `~matplotlib.lines.Line2D`

The grid line associated with the label position.

label1 : `~matplotlib.text.Text`

The left/bottom tick label.

label2 : `~matplotlib.text.Text`

The right/top tick label.

"""

def __init__(

self, axes, loc, *,

size=None, # points

width=None,

color=None,

tickdir=None,

pad=None,

labelsize=None,

labelcolor=None,

labelfontfamily=None,

zorder=None,

gridOn=None, # defaults to axes.grid depending on axes.grid.which

tick1On=True,

tick2On=True,

label1On=True,

label2On=False,

major=True,

labelrotation=0,

labelrotation_mode=None,

grid_color=None,

grid_linestyle=None,

grid_linewidth=None,

grid_alpha=None,

**kwargs, # Other Line2D kwargs applied to gridlines.

):

"""

bbox is the Bound2D bounding box in display coords of the Axes

loc is the tick location in data coords

size is the tick size in points

"""

super().__init__()

if gridOn is None:

which = mpl.rcParams['axes.grid.which']

if major and which in ('both', 'major'):

gridOn = mpl.rcParams['axes.grid']

elif not major and which in ('both', 'minor'):

gridOn = mpl.rcParams['axes.grid']

else:

gridOn = False

self.set_figure(axes.get_figure(root=False))

self.axes = axes

self._loc = loc

self._major = major

name = self.__name__

major_minor = "major" if major else "minor"

self._size = mpl._val_or_rc(size, f"{name}.{major_minor}.size")

self._width = mpl._val_or_rc(width, f"{name}.{major_minor}.width")

self._base_pad = mpl._val_or_rc(pad, f"{name}.{major_minor}.pad")

color = mpl._val_or_rc(color, f"{name}.color")

labelcolor = mpl._val_or_rc(labelcolor, f"{name}.labelcolor")

if cbook._str_equal(labelcolor, 'inherit'):

# inherit from tick color

labelcolor = mpl.rcParams[f"{name}.color"]

labelsize = mpl._val_or_rc(labelsize, f"{name}.labelsize")

self._set_labelrotation(labelrotation)

if zorder is None:

if major:

zorder = mlines.Line2D.zorder + 0.01

else:

zorder = mlines.Line2D.zorder

self._zorder = zorder

grid_color = mpl._val_or_rc(

grid_color,

f"grid.{major_minor}.color",

"grid.color",

)

grid_linestyle = mpl._val_or_rc(

grid_linestyle,

f"grid.{major_minor}.linestyle",

"grid.linestyle",

)

grid_linewidth = mpl._val_or_rc(

grid_linewidth,

f"grid.{major_minor}.linewidth",

"grid.linewidth",

)

if grid_alpha is None and not mcolors._has_alpha_channel(grid_color):

# alpha precedence: kwarg > color alpha > rcParams['grid.alpha']

# Note: only resolve to rcParams if the color does not have alpha

# otherwise `grid(color=(1, 1, 1, 0.5))` would work like

# grid(color=(1, 1, 1, 0.5), alpha=rcParams['grid.alpha'])

# so the that the rcParams default would override color alpha.

grid_alpha = mpl._val_or_rc(

# grid_alpha is None so we can use the first key

mpl.rcParams[f"grid.{major_minor}.alpha"],

"grid.alpha",

)

grid_kw = {k[5:]: v for k, v in kwargs.items() if k != "rotation_mode"}

self.tick1line = mlines.Line2D(

[], [],

color=color, linestyle="none", zorder=zorder, visible=tick1On,

markeredgecolor=color, markersize=self._size, markeredgewidth=self._width,

)

self.tick2line = mlines.Line2D(

[], [],

color=color, linestyle="none", zorder=zorder, visible=tick2On,

markeredgecolor=color, markersize=self._size, markeredgewidth=self._width,

)

self.gridline = mlines.Line2D(

[], [],

color=grid_color, alpha=grid_alpha, visible=gridOn,

linestyle=grid_linestyle, linewidth=grid_linewidth, marker="",

**grid_kw,

)

self.gridline.get_path()._interpolation_steps = \

GRIDLINE_INTERPOLATION_STEPS

self.label1 = mtext.Text(

np.nan, np.nan,

fontsize=labelsize, color=labelcolor, visible=label1On,

fontfamily=labelfontfamily, rotation=self._labelrotation[1],

rotation_mode=labelrotation_mode)

self.label2 = mtext.Text(

np.nan, np.nan,

fontsize=labelsize, color=labelcolor, visible=label2On,

fontfamily=labelfontfamily, rotation=self._labelrotation[1],

rotation_mode=labelrotation_mode)

self._apply_tickdir(tickdir)

for artist in [self.tick1line, self.tick2line, self.gridline,

self.label1, self.label2]:

self._set_artist_props(artist)

self.update_position(loc)

def _set_labelrotation(self, labelrotation):

if isinstance(labelrotation, str):

mode = labelrotation

angle = 0

elif isinstance(labelrotation, (tuple, list)):

mode, angle = labelrotation

else:

mode = 'default'

angle = labelrotation

_api.check_in_list(['auto', 'default'], labelrotation=mode)

self._labelrotation = (mode, angle)

@property

def _pad(self):

return self._base_pad + self.get_tick_padding()

def _apply_tickdir(self, tickdir):

"""Set tick direction. Valid values are 'out', 'in', 'inout'."""

# This method is responsible for verifying input and, in subclasses, for setting

# the tick{1,2}line markers. From the user perspective this should always be

# called through _apply_params, which further updates ticklabel positions using

# the new pads.

tickdir = mpl._val_or_rc(tickdir, f'{self.__name__}.direction')

_api.check_in_list(['in', 'out', 'inout'], tickdir=tickdir)

self._tickdir = tickdir

def get_tickdir(self):

return self._tickdir

def get_tick_padding(self):

"""Get the length of the tick outside of the Axes."""

padding = {

'in': 0.0,

'inout': 0.5,

'out': 1.0

}

return self._size * padding[self._tickdir]

def get_children(self):

children = [self.tick1line, self.tick2line,

self.gridline, self.label1, self.label2]

return children

def set_clip_path(self, path, transform=None):

# docstring inherited

super().set_clip_path(path, transform)

self.gridline.set_clip_path(path, transform)

self.stale = True

def contains(self, mouseevent):

"""

Test whether the mouse event occurred in the Tick marks.

This function always returns false. It is more useful to test if the

axis as a whole contains the mouse rather than the set of tick marks.

"""

return False, {}

def set_pad(self, val):

"""

Set the tick label pad in points

Parameters

----------

val : float

"""

self._apply_params(pad=val)

self.stale = True

def get_pad(self):

"""Get the value of the tick label pad in points."""

return self._base_pad

def get_loc(self):

"""Return the tick location (data coords) as a scalar."""

return self._loc

@martist.allow_rasterization

def draw(self, renderer):

if not self.get_visible():

self.stale = False

return

renderer.open_group(self.__name__, gid=self.get_gid())

for artist in [self.gridline, self.tick1line, self.tick2line,

self.label1, self.label2]:

artist.draw(renderer)

renderer.close_group(self.__name__)

self.stale = False

def set_url(self, url):

"""

Set the url of label1 and label2.

Parameters

----------

url : str

"""

super().set_url(url)

self.label1.set_url(url)

self.label2.set_url(url)

self.stale = True

def _set_artist_props(self, a):

a.set_figure(self.get_figure(root=False))

def get_view_interval(self):

"""

Return the view limits ``(min, max)`` of the axis the tick belongs to.

"""

raise NotImplementedError('Derived must override')

def _apply_params(self, **kwargs):

for name, target in [("gridOn", self.gridline),

("tick1On", self.tick1line),

("tick2On", self.tick2line),

("label1On", self.label1),

("label2On", self.label2)]:

if name in kwargs:

target.set_visible(kwargs.pop(name))

if any(k in kwargs for k in ['size', 'width', 'pad', 'tickdir']):

self._size = kwargs.pop('size', self._size)

# Width could be handled outside this block, but it is

# convenient to leave it here.

self._width = kwargs.pop('width', self._width)

self._base_pad = kwargs.pop('pad', self._base_pad)

# _apply_tickdir uses _size and _base_pad to make _pad, and also

# sets the ticklines markers.

self._apply_tickdir(kwargs.pop('tickdir', self._tickdir))

for line in (self.tick1line, self.tick2line):

line.set_markersize(self._size)

line.set_markeredgewidth(self._width)

# _get_text1_transform uses _pad from _apply_tickdir.

trans = self._get_text1_transform()[0]

self.label1.set_transform(trans)

trans = self._get_text2_transform()[0]

self.label2.set_transform(trans)

tick_kw = {k: v for k, v in kwargs.items() if k in ['color', 'zorder']}

if 'color' in kwargs:

tick_kw['markeredgecolor'] = kwargs['color']

self.tick1line.set(**tick_kw)

self.tick2line.set(**tick_kw)

for k, v in tick_kw.items():

setattr(self, '_' + k, v)

if 'labelrotation' in kwargs:

self._set_labelrotation(kwargs.pop('labelrotation'))

self.label1.set(rotation=self._labelrotation[1])

self.label2.set(rotation=self._labelrotation[1])

label_kw = {k[5:]: v for k, v in kwargs.items()

if k in ['labelsize', 'labelcolor', 'labelfontfamily',

'labelrotation_mode']}

self.label1.set(**label_kw)

self.label2.set(**label_kw)

grid_kw = {k[5:]: v for k, v in kwargs.items()

if k in _gridline_param_names}

self.gridline.set(**grid_kw)

def update_position(self, loc):

"""Set the location of tick in data coords with scalar *loc*."""

raise NotImplementedError('Derived must override')

def _get_text1_transform(self):

raise NotImplementedError('Derived must override')

def _get_text2_transform(self):

raise NotImplementedError('Derived must override')

class XTick(Tick):

"""

Contains all the Artists needed to make an x tick - the tick line,

the label text and the grid line

"""

__name__ = 'xtick'

def __init__(self, *args, **kwargs):

super().__init__(*args, **kwargs)

# x in data coords, y in axes coords

ax = self.axes

self.tick1line.set(

data=([0], [0]), transform=ax.get_xaxis_transform("tick1"))

self.tick2line.set(

data=([0], [1]), transform=ax.get_xaxis_transform("tick2"))

self.gridline.set(

data=([0, 0], [0, 1]), transform=ax.get_xaxis_transform("grid"))

# the y loc is 3 points below the min of y axis

trans, va, ha = self._get_text1_transform()

self.label1.set(

x=0, y=0,

verticalalignment=va, horizontalalignment=ha, transform=trans,

)

trans, va, ha = self._get_text2_transform()

self.label2.set(

x=0, y=1,

verticalalignment=va, horizontalalignment=ha, transform=trans,

)

def _get_text1_transform(self):

return self.axes.get_xaxis_text1_transform(self._pad)

def _get_text2_transform(self):

return self.axes.get_xaxis_text2_transform(self._pad)

def _apply_tickdir(self, tickdir):

# docstring inherited

super()._apply_tickdir(tickdir)

mark1, mark2 = {

'out': (mlines.TICKDOWN, mlines.TICKUP),

'in': (mlines.TICKUP, mlines.TICKDOWN),

'inout': ('|', '|'),

}[self._tickdir]

self.tick1line.set_marker(mark1)

self.tick2line.set_marker(mark2)

def update_position(self, loc):

"""Set the location of tick in data coords with scalar *loc*."""

self.tick1line.set_xdata((loc,))

self.tick2line.set_xdata((loc,))

self.gridline.set_xdata((loc,))

self.label1.set_x(loc)

self.label2.set_x(loc)

self._loc = loc

self.stale = True

def get_view_interval(self):

# docstring inherited

return self.axes.viewLim.intervalx

class YTick(Tick):

"""

Contains all the Artists needed to make a Y tick - the tick line,

the label text and the grid line

"""

__name__ = 'ytick'

def __init__(self, *args, **kwargs):

super().__init__(*args, **kwargs)

# x in axes coords, y in data coords

ax = self.axes

self.tick1line.set(

data=([0], [0]), transform=ax.get_yaxis_transform("tick1"))

self.tick2line.set(

data=([1], [0]), transform=ax.get_yaxis_transform("tick2"))

self.gridline.set(

data=([0, 1], [0, 0]), transform=ax.get_yaxis_transform("grid"))

# the y loc is 3 points below the min of y axis

trans, va, ha = self._get_text1_transform()

self.label1.set(

x=0, y=0,

verticalalignment=va, horizontalalignment=ha, transform=trans,

)

trans, va, ha = self._get_text2_transform()

self.label2.set(

x=1, y=0,

verticalalignment=va, horizontalalignment=ha, transform=trans,

)

def _get_text1_transform(self):

return self.axes.get_yaxis_text1_transform(self._pad)

def _get_text2_transform(self):

return self.axes.get_yaxis_text2_transform(self._pad)

def _apply_tickdir(self, tickdir):

# docstring inherited

super()._apply_tickdir(tickdir)

mark1, mark2 = {

'out': (mlines.TICKLEFT, mlines.TICKRIGHT),

'in': (mlines.TICKRIGHT, mlines.TICKLEFT),

'inout': ('_', '_'),

}[self._tickdir]

self.tick1line.set_marker(mark1)

self.tick2line.set_marker(mark2)

def update_position(self, loc):

"""Set the location of tick in data coords with scalar *loc*."""

self.tick1line.set_ydata((loc,))

self.tick2line.set_ydata((loc,))

self.gridline.set_ydata((loc,))

self.label1.set_y(loc)

self.label2.set_y(loc)

self._loc = loc

self.stale = True

def get_view_interval(self):

# docstring inherited

return self.axes.viewLim.intervaly

class Ticker:

"""

A container for the objects defining tick position and format.

Attributes

----------

locator : `~matplotlib.ticker.Locator` subclass

Determines the positions of the ticks.

formatter : `~matplotlib.ticker.Formatter` subclass

Determines the format of the tick labels.

"""

def __init__(self):

self._locator = None

self._formatter = None

self._locator_is_default = True

self._formatter_is_default = True

@property

def locator(self):

return self._locator

@locator.setter

def locator(self, locator):

if not isinstance(locator, mticker.Locator):

raise TypeError('locator must be a subclass of '

'matplotlib.ticker.Locator')

self._locator = locator

@property

def formatter(self):

return self._formatter

@formatter.setter

def formatter(self, formatter):

if not isinstance(formatter, mticker.Formatter):

raise TypeError('formatter must be a subclass of '

'matplotlib.ticker.Formatter')

self._formatter = formatter

class _LazyTickList:

"""

A descriptor for lazy instantiation of tick lists.

See comment above definition of the ``majorTicks`` and ``minorTicks``

attributes.

"""

def __init__(self, major):

self._major = major

def __get__(self, instance, owner):

if instance is None:

return self

else:

# instance._get_tick() can itself try to access the majorTicks

# attribute (e.g. in certain projection classes which override

# e.g. get_xaxis_text1_transform). In order to avoid infinite

# recursion, first set the majorTicks on the instance temporarily

# to an empty list. Then create the tick; note that _get_tick()

# may call reset_ticks(). Therefore, the final tick list is

# created and assigned afterwards.

if self._major:

instance.majorTicks = []

tick = instance._get_tick(major=True)

instance.majorTicks = [tick]

return instance.majorTicks

else:

instance.minorTicks = []

tick = instance._get_tick(major=False)

instance.minorTicks = [tick]

return instance.minorTicks

class Axis(martist.Artist):

"""

Base class for `.XAxis` and `.YAxis`.

Attributes

----------

isDefault_label : bool

axes : `~matplotlib.axes.Axes`

The `~.axes.Axes` to which the Axis belongs.

major : `~matplotlib.axis.Ticker`

Determines the major tick positions and their label format.

minor : `~matplotlib.axis.Ticker`

Determines the minor tick positions and their label format.

callbacks : `~matplotlib.cbook.CallbackRegistry`

label : `~matplotlib.text.Text`

The axis label.

labelpad : float

The distance between the axis label and the tick labels.

Defaults to :rc:`axes.labelpad`.

offsetText : `~matplotlib.text.Text`

A `.Text` object containing the data offset of the ticks (if any).

pickradius : float

The acceptance radius for containment tests. See also `.Axis.contains`.

majorTicks : list of `.Tick`

The major ticks.

.. warning::

Ticks are not guaranteed to be persistent. Various operations

can create, delete and modify the Tick instances. There is an

imminent risk that changes to individual ticks will not

survive if you work on the figure further (including also

panning/zooming on a displayed figure).

Working on the individual ticks is a method of last resort.

Use `.set_tick_params` instead if possible.

minorTicks : list of `.Tick`

The minor ticks.

"""

OFFSETTEXTPAD = 3

# The class used in _get_tick() to create tick instances. Must either be

# overwritten in subclasses, or subclasses must reimplement _get_tick().

_tick_class = None

converter = _api.deprecate_privatize_attribute(

"3.10",

alternative="get_converter and set_converter methods"

)

def __str__(self):

return "{}({},{})".format(

type(self).__name__, *self.axes.transAxes.transform((0, 0)))

def __init__(self, axes, *, pickradius=15, clear=True):

"""

Parameters

----------

axes : `~matplotlib.axes.Axes`

The `~.axes.Axes` to which the created Axis belongs.

pickradius : float

The acceptance radius for containment tests. See also

`.Axis.contains`.

clear : bool, default: True

Whether to clear the Axis on creation. This is not required, e.g., when

creating an Axis as part of an Axes, as ``Axes.clear`` will call

``Axis.clear``.

.. versionadded:: 3.8

"""

super().__init__()

self._remove_overlapping_locs = True

self.set_figure(axes.get_figure(root=False))

self.isDefault_label = True

self.axes = axes

self.major = Ticker()

self.minor = Ticker()

self.callbacks = cbook.CallbackRegistry(signals=["units"])

self._autolabelpos = True

self.label = mtext.Text(

np.nan, np.nan,

fontsize=mpl.rcParams['axes.labelsize'],

fontweight=mpl.rcParams['axes.labelweight'],

color=mpl.rcParams['axes.labelcolor'],

) #: The `.Text` object of the axis label.

self._set_artist_props(self.label)

self.offsetText = mtext.Text(np.nan, np.nan)

self._set_artist_props(self.offsetText)

self.labelpad = mpl.rcParams['axes.labelpad']

self.pickradius = pickradius

# Initialize here for testing; later add API

self._major_tick_kw = dict()

self._minor_tick_kw = dict()

if clear:

self.clear()

else:

self._converter = None

self._converter_is_explicit = False

self.units = None

self._autoscale_on = True

@property

def isDefault_majloc(self):

return self.major._locator_is_default

@isDefault_majloc.setter

def isDefault_majloc(self, value):

self.major._locator_is_default = value

@property

def isDefault_majfmt(self):

return self.major._formatter_is_default

@isDefault_majfmt.setter

def isDefault_majfmt(self, value):

self.major._formatter_is_default = value

@property

def isDefault_minloc(self):

return self.minor._locator_is_default

@isDefault_minloc.setter

def isDefault_minloc(self, value):

self.minor._locator_is_default = value

@property

def isDefault_minfmt(self):

return self.minor._formatter_is_default

@isDefault_minfmt.setter

def isDefault_minfmt(self, value):

self.minor._formatter_is_default = value

def _get_shared_axes(self):

"""Return Grouper of shared Axes for current axis."""

return self.axes._shared_axes[

self._get_axis_name()].get_siblings(self.axes)

def _get_shared_axis(self):

"""Return list of shared axis for current axis."""

name = self._get_axis_name()

return [ax._axis_map[name] for ax in self._get_shared_axes()]

def _get_axis_name(self):

"""Return the axis name."""

return next(name for name, axis in self.axes._axis_map.items()

if axis is self)

# During initialization, Axis objects often create ticks that are later

# unused; this turns out to be a very slow step. Instead, use a custom

# descriptor to make the tick lists lazy and instantiate them as needed.

majorTicks = _LazyTickList(major=True)

minorTicks = _LazyTickList(major=False)

def get_remove_overlapping_locs(self):

return self._remove_overlapping_locs

def set_remove_overlapping_locs(self, val):

self._remove_overlapping_locs = bool(val)

remove_overlapping_locs = property(

get_remove_overlapping_locs, set_remove_overlapping_locs,

doc=('If minor ticker locations that overlap with major '

'ticker locations should be trimmed.'))

def set_label_coords(self, x, y, transform=None):

"""

Set the coordinates of the label.

By default, the x coordinate of the y label and the y coordinate of the

x label are determined by the tick label bounding boxes, but this can

lead to poor alignment of multiple labels if there are multiple Axes.

You can also specify the coordinate system of the label with the

transform. If None, the default coordinate system will be the axes

coordinate system: (0, 0) is bottom left, (0.5, 0.5) is center, etc.

"""

self._autolabelpos = False

if transform is None:

transform = self.axes.transAxes

self.label.set_transform(transform)

self.label.set_position((x, y))

self.stale = True

def get_transform(self):

"""Return the transform used in the Axis' scale"""

return self._scale.get_transform()

def get_scale(self):

"""Return this Axis' scale (as a str)."""

return self._scale.name

def _set_scale(self, value, **kwargs):

if not isinstance(value, mscale.ScaleBase):

self._scale = mscale.scale_factory(value, self, **kwargs)

else:

self._scale = value

self._scale.set_default_locators_and_formatters(self)

self.isDefault_majloc = True

self.isDefault_minloc = True

self.isDefault_majfmt = True

self.isDefault_minfmt = True

# This method is directly wrapped by Axes.set_{x,y}scale.

def _set_axes_scale(self, value, **kwargs):

"""

Set this Axis' scale.

Parameters

----------

value : str or `.ScaleBase`

The axis scale type to apply. Valid string values are the names of scale

classes ("linear", "log", "function",...). These may be the names of any

of the :ref:`built-in scales<builtin_scales>` or of any custom scales

registered using `matplotlib.scale.register_scale`.

**kwargs

If *value* is a string, keywords are passed to the instantiation method of

the respective class.

"""

name = self._get_axis_name()

old_default_lims = (self.get_major_locator()

.nonsingular(-np.inf, np.inf))

for ax in self._get_shared_axes():

ax._axis_map[name]._set_scale(value, **kwargs)

ax._update_transScale()

ax.stale = True

new_default_lims = (self.get_major_locator()

.nonsingular(-np.inf, np.inf))

if old_default_lims != new_default_lims:

# Force autoscaling now, to take advantage of the scale locator's

# nonsingular() before it possibly gets swapped out by the user.

self.axes.autoscale_view(

**{f"scale{k}": k == name for k in self.axes._axis_names})

def limit_range_for_scale(self, vmin, vmax):

"""

Return the range *vmin*, *vmax*, restricted to the domain supported by the

current scale.

"""

return self._scale.limit_range_for_scale(vmin, vmax, self.get_minpos())

def _get_autoscale_on(self):

"""Return whether this Axis is autoscaled."""

return self._autoscale_on

def _set_autoscale_on(self, b):

"""

Set whether this Axis is autoscaled when drawing or by `.Axes.autoscale_view`.

If b is None, then the value is not changed.

Parameters

----------

b : bool

"""

if b is not None:

self._autoscale_on = b

def get_children(self):

return [self.label, self.offsetText,

*self.get_major_ticks(), *self.get_minor_ticks()]

def _reset_major_tick_kw(self):

self._major_tick_kw.clear()

self._major_tick_kw['gridOn'] = (

mpl.rcParams['axes.grid'] and

mpl.rcParams['axes.grid.which'] in ('both', 'major'))

def _reset_minor_tick_kw(self):

self._minor_tick_kw.clear()

self._minor_tick_kw['gridOn'] = (

mpl.rcParams['axes.grid'] and

mpl.rcParams['axes.grid.which'] in ('both', 'minor'))

def clear(self):

"""

Clear the axis.

This resets axis properties to their default values:

- the label

- the scale

- locators, formatters and ticks

- major and minor grid

- units

- registered callbacks

"""

self.label._reset_visual_defaults()

# The above resets the label formatting using text rcParams,

# so we then update the formatting using axes rcParams

self.label.set_color(mpl.rcParams['axes.labelcolor'])

self.label.set_fontsize(mpl.rcParams['axes.labelsize'])

self.label.set_fontweight(mpl.rcParams['axes.labelweight'])

self.offsetText._reset_visual_defaults()

self.labelpad = mpl.rcParams['axes.labelpad']

self._init()

self._set_scale('linear')

# Clear the callback registry for this axis, or it may "leak"

self.callbacks = cbook.CallbackRegistry(signals=["units"])

# whether the grids are on

self._major_tick_kw['gridOn'] = (

mpl.rcParams['axes.grid'] and

mpl.rcParams['axes.grid.which'] in ('both', 'major'))

self._minor_tick_kw['gridOn'] = (

mpl.rcParams['axes.grid'] and

mpl.rcParams['axes.grid.which'] in ('both', 'minor'))

self.reset_ticks()

self._converter = None

self._converter_is_explicit = False

self.units = None

self.stale = True

def reset_ticks(self):

"""

Re-initialize the major and minor Tick lists.

Each list starts with a single fresh Tick.

"""

# Restore the lazy tick lists.

try:

del self.majorTicks

except AttributeError:

pass

try:

del self.minorTicks

except AttributeError:

pass

try:

self.set_clip_path(self.axes.patch)

except AttributeError:

pass

def minorticks_on(self):

"""

Display default minor ticks on the Axis, depending on the scale

(`~.axis.Axis.get_scale`).

Scales use specific minor locators:

- log: `~.LogLocator`

- symlog: `~.SymmetricalLogLocator`

- asinh: `~.AsinhLocator`

- logit: `~.LogitLocator`

- default: `~.AutoMinorLocator`

Displaying minor ticks may reduce performance; you may turn them off

using `minorticks_off()` if drawing speed is a problem.

"""

scale = self.get_scale()

if scale == 'log':

s = self._scale

self.set_minor_locator(mticker.LogLocator(s.base, s.subs))

elif scale == 'symlog':

s = self._scale

self.set_minor_locator(

mticker.SymmetricalLogLocator(s._transform, s.subs))

elif scale == 'asinh':

s = self._scale

self.set_minor_locator(

mticker.AsinhLocator(s.linear_width, base=s._base,

subs=s._subs))

elif scale == 'logit':

self.set_minor_locator(mticker.LogitLocator(minor=True))

else:

self.set_minor_locator(mticker.AutoMinorLocator())

def minorticks_off(self):

"""Remove minor ticks from the Axis."""

self.set_minor_locator(mticker.NullLocator())

def set_tick_params(self, which='major', reset=False, **kwargs):

"""

Set appearance parameters for ticks, ticklabels, and gridlines.

For documentation of keyword arguments, see

:meth:`matplotlib.axes.Axes.tick_params`.

See Also

--------

.Axis.get_tick_params

View the current style settings for ticks, ticklabels, and

gridlines.

"""

_api.check_in_list(['major', 'minor', 'both'], which=which)

kwtrans = self._translate_tick_params(kwargs)

# the kwargs are stored in self._major/minor_tick_kw so that any

# future new ticks will automatically get them

if reset:

if which in ['major', 'both']:

self._reset_major_tick_kw()

self._major_tick_kw.update(kwtrans)

if which in ['minor', 'both']:

self._reset_minor_tick_kw()

self._minor_tick_kw.update(kwtrans)

self.reset_ticks()

else:

if which in ['major', 'both']:

self._major_tick_kw.update(kwtrans)

for tick in self.majorTicks:

tick._apply_params(**kwtrans)

if which in ['minor', 'both']:

self._minor_tick_kw.update(kwtrans)

for tick in self.minorTicks:

tick._apply_params(**kwtrans)

# labelOn and labelcolor also apply to the offset text.

if 'label1On' in kwtrans or 'label2On' in kwtrans:

self.offsetText.set_visible(

self._major_tick_kw.get('label1On', False)

or self._major_tick_kw.get('label2On', False))

if 'labelcolor' in kwtrans:

self.offsetText.set_color(kwtrans['labelcolor'])

self.stale = True

def get_tick_params(self, which='major'):

"""

Get appearance parameters for ticks, ticklabels, and gridlines.

.. versionadded:: 3.7